Of course.
I might say "fuck McKennie", or "Gatti is the worst player ever", but what more can Gatti do? That's his level. He is not even nearly as good to be playing for a top 10 serie A team.
But the one who keeps playing him and the one(s) who bought him cannot be so easily excused. Allegri is the one playing him and someone, or a group of people, is the one who appointed Allegri, who is keeping Allegri, and who assembled this weak team.
So, my list of guilt is this:
1. Management
2. Coach
3. Great players if they play bad (Di Maria, Pogba)
4. Good players if they play bad
5. The average players if they play bad
6. Gatti, McKennie, De Sciglio and the other talentless players.